CN1475410A - Extruding bottle - Google Patents
Extruding bottle Download PDFInfo
- Publication number
- CN1475410A CN1475410A CNA031466834A CN03146683A CN1475410A CN 1475410 A CN1475410 A CN 1475410A CN A031466834 A CNA031466834 A CN A031466834A CN 03146683 A CN03146683 A CN 03146683A CN 1475410 A CN1475410 A CN 1475410A
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- China
- Prior art keywords
- bottle
- impression
- squeeze
- ldpe
- low density
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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- 239000000463 material Substances 0.000 claims abstract description 27
- 229920001684 low density polyethylene Polymers 0.000 claims description 48
- 239000004702 low-density polyethylene Substances 0.000 claims description 48
- 229920006163 vinyl copolymer Polymers 0.000 claims description 13
- 229920001577 copolymer Polymers 0.000 claims description 12
- 229920001526 metallocene linear low density polyethylene Polymers 0.000 claims description 12
- 230000015572 biosynthetic process Effects 0.000 claims description 8
- 238000005452 bending Methods 0.000 claims description 7
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 claims description 6
- 229920010126 Linear Low Density Polyethylene (LLDPE) Polymers 0.000 claims description 6
- 238000009826 distribution Methods 0.000 claims description 5
- QQONPFPTGQHPMA-UHFFFAOYSA-N propylene Natural products CC=C QQONPFPTGQHPMA-UHFFFAOYSA-N 0.000 claims description 3
- 125000004805 propylene group Chemical group [H]C([H])([H])C([H])([*:1])C([H])([H])[*:2] 0.000 claims description 3
- 239000004711 α-olefin Substances 0.000 claims description 3
- 229920005989 resin Polymers 0.000 abstract description 32
- 239000011347 resin Substances 0.000 abstract description 32
- 230000000694 effects Effects 0.000 abstract description 3
- 230000004888 barrier function Effects 0.000 abstract 2
- 239000003550 marker Substances 0.000 abstract 2
- 229920005672 polyolefin resin Polymers 0.000 abstract 1
- 230000000007 visual effect Effects 0.000 description 25
- 229920000092 linear low density polyethylene Polymers 0.000 description 19
- 239000004707 linear low-density polyethylene Substances 0.000 description 19
- 230000000052 comparative effect Effects 0.000 description 14
- 229920000219 Ethylene vinyl alcohol Polymers 0.000 description 13
- UFRKOOWSQGXVKV-UHFFFAOYSA-N ethene;ethenol Chemical compound C=C.OC=C UFRKOOWSQGXVKV-UHFFFAOYSA-N 0.000 description 13
- 239000004715 ethylene vinyl alcohol Substances 0.000 description 13
- 239000000126 substance Substances 0.000 description 12
- 238000000034 method Methods 0.000 description 11
- 239000004215 Carbon black (E152) Substances 0.000 description 9
- 238000000071 blow moulding Methods 0.000 description 9
- 229930195733 hydrocarbon Natural products 0.000 description 9
- 150000002430 hydrocarbons Chemical class 0.000 description 9
- 229920000098 polyolefin Polymers 0.000 description 9
- 239000007788 liquid Substances 0.000 description 8
- 229920005678 polyethylene based resin Polymers 0.000 description 8
- 238000002955 isolation Methods 0.000 description 7
- 235000010746 mayonnaise Nutrition 0.000 description 7
- 239000008268 mayonnaise Substances 0.000 description 7
- 238000000465 moulding Methods 0.000 description 7
- 239000000853 adhesive Substances 0.000 description 6
- 230000001070 adhesive effect Effects 0.000 description 6
- 235000011389 fruit/vegetable juice Nutrition 0.000 description 6
- 238000012545 processing Methods 0.000 description 5
- 238000007664 blowing Methods 0.000 description 4
- 235000021168 barbecue Nutrition 0.000 description 3
- 235000013409 condiments Nutrition 0.000 description 3
- FPYJFEHAWHCUMM-UHFFFAOYSA-N maleic anhydride Chemical compound O=C1OC(=O)C=C1 FPYJFEHAWHCUMM-UHFFFAOYSA-N 0.000 description 3
- 235000014438 salad dressings Nutrition 0.000 description 3
- 239000005977 Ethylene Substances 0.000 description 2
- 239000004677 Nylon Substances 0.000 description 2
- 230000003321 amplification Effects 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 238000005520 cutting process Methods 0.000 description 2
- 238000001125 extrusion Methods 0.000 description 2
- 239000012968 metallocene catalyst Substances 0.000 description 2
- 238000003199 nucleic acid amplification method Methods 0.000 description 2
- 229920001778 nylon Polymers 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- ZOXJGFHDIHLPTG-UHFFFAOYSA-N Boron Chemical compound [B] ZOXJGFHDIHLPTG-UHFFFAOYSA-N 0.000 description 1
- 229910001018 Cast iron Inorganic materials 0.000 description 1
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 1
- 229910001209 Low-carbon steel Inorganic materials 0.000 description 1
- 239000004743 Polypropylene Substances 0.000 description 1
- XTXRWKRVRITETP-UHFFFAOYSA-N Vinyl acetate Chemical class CC(=O)OC=C XTXRWKRVRITETP-UHFFFAOYSA-N 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 150000008065 acid anhydrides Chemical class 0.000 description 1
- 150000001336 alkenes Chemical class 0.000 description 1
- 239000004411 aluminium Substances 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 238000005422 blasting Methods 0.000 description 1
- KGBXLFKZBHKPEV-UHFFFAOYSA-N boric acid Chemical compound OB(O)O KGBXLFKZBHKPEV-UHFFFAOYSA-N 0.000 description 1
- 239000004327 boric acid Substances 0.000 description 1
- 229910052796 boron Inorganic materials 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000012790 confirmation Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 235000013305 food Nutrition 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 239000004519 grease Substances 0.000 description 1
- 230000003116 impacting effect Effects 0.000 description 1
- 229920000831 ionic polymer Polymers 0.000 description 1
- 239000002932 luster Substances 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 239000003595 mist Substances 0.000 description 1
- 229920001223 polyethylene glycol Polymers 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 239000002952 polymeric resin Substances 0.000 description 1
- 238000006116 polymerization reaction Methods 0.000 description 1
- -1 polypropylene Polymers 0.000 description 1
- 229920001155 polypropylene Polymers 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 229920005653 propylene-ethylene copolymer Polymers 0.000 description 1
- 238000010298 pulverizing process Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 238000007127 saponification reaction Methods 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 238000005480 shot peening Methods 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
- 239000011734 sodium Substances 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 125000000391 vinyl group Chemical group [H]C([*])=C([H])[H] 0.000 description 1
- 229920002554 vinyl polymer Polymers 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D1/00—Rigid or semi-rigid containers having bodies formed in one piece, e.g. by casting metallic material, by moulding plastics, by blowing vitreous material, by throwing ceramic material, by moulding pulped fibrous material or by deep-drawing operations performed on sheet material
- B65D1/32—Containers adapted to be temporarily deformed by external pressure to expel contents
Landscapes
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Mechanical Engineering (AREA)
- Containers Having Bodies Formed In One Piece (AREA)
- Tubes (AREA)
- Manufacture Of Macromolecular Shaped Articles (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
Abstract
Provided is a squeeze bottle which can be thinned while keeping barrier properties and visibility, improves strength against drop impact and is excellent to handle and cap. The squeeze bottle consists of a bottle (5) made of a a polyolefin based resin which is a flexible resin material including a mouth (2), a barrel (3) and a bottom (4), and a lid (6) to be screwed on the mouth (2) of the bottle (5), while a score (7) consisting of a marker (7a) and a line (7b) surrounding the marker is provided on the external surface (3a) of the barrel (3). The score (7) is formed so that at least part of it is substantially recessed from the external surface (3a) of the bottle (5). Thus the strength of the score (7) and its vicinity is improved, resulting in the improvement of the strength against drop impact. Accordingly, the bottle can be thinned as well while keeping visibility and barrier properties, and attain effects of meeting social demands for saving resources and reducing wastes.
Description
Technical field
The invention relates to the higher built-in substances of viscosity ratio such as condiment juice of dress salad dressing juice, mayonnaise, catsup, barbecue, and in use built-in substance is extruded the squeeze bottle of use, more particularly, be the squeeze bottle that the impact when falling relatively has superior shock resistance.
Background technology
The higher built-in substances of viscosity ratio such as condiment juice with the bottled salad dressing juice of extruding, mayonnaise, catsup, barbecue, when using these built-in substances, taking off lid pushes with finger, can easily take out built-in substance, after taking out built-in substance, covering bottle cap can seal at an easy rate, because such processing is very convenient, so used widely.Its result has produced a large amount of useless squeeze bottles that used behind the above-mentioned built-in substance.Therefore, from saving resource and reducing these 2 of quantity of refuses, the materials used of cutting down squeeze bottle is a big problem.This big problem minimizing weight that must lead, the attenuate wall thickness.
For example, as shown in Figure 6, the bottle cap b that is used at present to adorn on bottle a that bottleneck portion, body part and bottle bottom that the squeeze bottle of mayonnaise is made up of the polyalkenes hydrocarbon system resin with flexibility resin material be grouped into and the bottleneck portion that is screwed in this bottle a constitutes, impression c is set on the outside face of body, and the line that its identification by built-in substance is represented or is used to improve the expression mark of commodity value and surrounds these is formed.Since with mould d shown in Figure 7 with the squeeze bottle blow molding, at first polyalkenes hydrocarbon system resin forms a bottle a by mould d, through some time lags, the impression moulding recess by mould d forms this impression c as shown in Figure 8, and this impression c is protuberance with respect to outside face.
On the present squeeze bottle in Fig. 6 or Fig. 8, for the material that reduces use must reduce the bottle weight, that is, and the attenuate wall thickness.And for the attenuate wall thickness, also again enough isolation performances must be arranged for the quality that keeps mayonnaise, so in order to reduce the material of present use, the resin bed of bearing the isolation layer effect is remained unchanged, be necessary the polyalkenes hydrocarbon system resin bed that makes drop strength keep identical and reduce other with the past.In addition and since in bottle a filling after the mayonnaise, bottle cap b must be screwed on the bottleneck portion reliably, thus bottleneck portion with and on every side body need keep corresponding strength (for example screw capping intensity).Therefore, under such condition, for the materials used of cutting down squeeze bottle can be considered 1. to improve the intensity of material self, 2. change structure and improve intensity.
But, about 1.,, use the low low density polyethylene (LDPE) (LDPE) of MFR of polyalkenes hydrocarbon system resin in order to improve drop strength, the degradation that spues during owing to moulding, resin pressure and resin temperature all raise, so be difficult to moulding stably.
In addition, improve the words of the density of LDPE in order to improve rigidity (for example Ao Erxun bending stiffness etc.), then drop strength reduces, thereby and improve drop strength in order to continue to improve rigidity, and employing linear low density polyethylene (LLDPE), or in LLDPE, add LDPE, or the words that in LDPE, add LLDPE and the metallocene LLDPE technical matters that then has forming characteristics to descend.
In addition, as allocate LLDPE into, produce gloss on the parison, from the impression moulding recess e exhaust variation of mould d, the cooling that is the impression c of projection with respect to outside face postpones and becomes fragile, and in addition, has from the both sides of impression c to be stretched and the tendency of that part of attenuation.Make this tendency of bottle a attenuation obvious more more.
In addition,, reduce drop strength, as the impression moulding recess e of mould d is shoaled and the words (with reference to Fig. 5) of the impression c step-down of projection, the problem that then has the visual identification performance of impression c to reduce for the part attenuation that prevents impression c about 2..
As mentioned above, consider 1. for the materials used that reduces present squeeze bottle and method 2. in fact all is difficult, in addition, along with the thickness that makes squeeze bottle reduces, the change of thickness becomes obviously, has increased the deviation of drop strength, makes quality management become very difficult.
Summary of the invention
Therefore, the purpose of this invention is to provide and not only keep visual identification performance and isolation performance but also can make the thickness attenuation, drop strength remained in the past or surpass level in the past, no matter and before or after having loaded built-in substance, carrying and screw capping all are easy to squeeze bottle.
The present invention proposes in order to reach above purpose, is characterized as by following structure and forms.
That is,, it is characterized in that at least a portion of the impression that forms is substantially recessed on the surface of bottle according to a kind of squeeze bottle provided by the invention.
In addition, according to above-mentioned squeeze bottle provided by the invention, the degree of depth of aforementioned impression is more than 0.15mm.
In addition, according to above-mentioned squeeze bottle provided by the invention, on the main layer of the aforementioned bottle of formation, use density at 0.935g/cm
3Following vinyl copolymer.
In addition, according to above-mentioned squeeze bottle provided by the invention, aforementioned vinyl copolymer is that density is at 0.935g/cm
3Following low density polyethylene (LDPE) (LDPE) or density are at 0.935g/cm
3Following linear low density polyethylene (LLDPE) or these complex.
In addition, according to above-mentioned squeeze bottle provided by the invention, in the aforementioned vinyl copolymer of the main material that constitutes aforementioned bottle, cooperate molecular weight distribution (Mw/Mn) less than 4 linear low density polyethylene (LLDPE) or metallocene linear-low density polyethylene (MLLDPE).
In addition, according to above-mentioned squeeze bottle provided by the invention, the bending stiffness of aforementioned vinyl copolymer (Ao Erxun) is at 2500kgf/cm
2More than.
In addition, according to above-mentioned squeeze bottle provided by the invention, use on the main layer of aforementioned bottle by propylene and the alpha-olefin outside this, the propylene series copolymer that ethene is formed constituting.
In addition, according to above-mentioned squeeze bottle provided by the invention, constituting on the main layer of aforementioned bottle, it is saponified to contain ethene-vinyl acetate copolymer.
Description of drawings
Fig. 1 represents the lateral plan of the squeeze bottle of embodiment of the present invention.
Fig. 2 represents the pattern section drawing that the impression with the blow molding state of the squeeze bottle of embodiment of the present invention partly amplifies.
Fig. 3 represents the pattern section drawing that the impression with the blow molding state of the squeeze bottle of embodiment of the present invention partly amplifies.
Fig. 4 represents the amplification sectional view of impression size of the squeeze bottle of embodiment of the present invention.
Fig. 5 represents the amplification sectional view of impression size of the squeeze bottle of conventional example.
Fig. 6 represents the lateral plan of the squeeze bottle of conventional example.
Fig. 7 represents the pattern section drawing that the impression of blow molding state of the squeeze bottle of conventional example partly amplifies.
Fig. 8 represents the pattern section drawing that the impression of blow molding state of the squeeze bottle of conventional example partly amplifies.
Nomenclature: 1 squeeze bottle; 2 bottleneck portion; 3 body parts; The 3a outside face; 4 bottles of bottoms are divided; 5, a bottle; 6, the b bottle cap; 7, the c impression; The 7a sign; The 7b line; 10, the d mould; 11 bossings; 12 parisons; E impression moulding recess.
The specific embodiment
Following with reference to the description of drawings embodiments of the present invention.
Fig. 1 is the lateral plan of squeeze bottle of expression embodiment of the present invention, and Fig. 2 and Fig. 3 are the pattern section drawings that the impression with the blow molding state of the squeeze bottle of expression embodiment of the present invention partly amplifies.On figure, bottle cap 6 on the bottleneck portion 2 that the bottleneck portion 2 that squeeze bottle 1 is made up of the polyalkenes hydrocarbon system resin of the resin material with flexibility, body part 3 and bottle bottom are divided 4 bottles of forming 5 and be screwed in this bottle 5 constitutes, the sign 7a of expression identification sign and the impression of being made up of the line 7b that surrounds that sign 7 are set, and these impression 7 at least a portion form on the outside face 3a of bottle 5 and substantially are recessed on the outside face 3a of body part 3.
By mainly on body part 3, pushing with finger, aforementioned bottle 5 can easily be out of shape, and interior dress liquid can be extruded from bottleneck portion 2, like this, dress liquid is the higher flavorings of viscosity ratio such as condiment juice of salad dressing juice, mayonnaise, catsup, barbecue in being suitable for most, but also without particular limitation, also go for food materials in addition such as grease.In this bottle 5 filling behind the interior dress liquid, immediately bottle cap 6 is screwed on the bottleneck 2 and seals, can prevent from exterior pollution and because external force is come out the interior flow of liquid of adorning.
This bottle 5 is to use mould shown in Figure 2 10 blowings to form.The protuberance 11 of the impression 7 that on the outside face 3a that is set on this mould 10 at bottle 5, substantially is recessed into.Therefore, as use this mould 10 to blow the parison 12 of polyalkenes hydrocarbon system resins, and then at first run into protuberance shown in Figure 2 11, lag behind through the regular hour then, make bottle 5 moulding as shown in Figure 3, substantially form the impression 7 of concavity with respect to the outside face 3a of bottle 5.
In the forming process of concavity impression 7, run into the protuberance 11 of mould 10 earlier and cooled off rapidly, so reach high strength of material, when falling, be subjected at first impacting and compare with the impression c of conventional example protrusions, 7 of recessed impressions of the present invention do not have such problem.Recessed like this impression 7 is as confirming among the embodiment of back, though visual identification is more less better than the protruding impression c of conventional example, but drop strength improves significantly, can obtain reducing the thickness of that part of bottle 5 and guarantees the advantage of expendable weight.
Determine that with measuring method shown in Figure 4 the depth D of this impression 7 is more than the 0.15mm.Determine the degree of depth of this impression 7, what at first consider is the visual identification performance, second consider be on the basis of guaranteeing the visual identification performance, can accomplish how shallow.That is, the degree of depth of this impression 7 is difficult to that enough visual identification performances are arranged during less than 0.15mm, and surpasses under the situation of 0.15mm, though the visual identification performance has improved corresponding with the degree of depth of the impression tendency that then has drop strength to descend.Therefore, though the degree of depth of this impression 7 is more than the 0.15mm, higher limit is more or less different according to following resin material, and with about 3 times, that is, it is appropriate being decided to be the value about 0.5mm and making mould.
The polyalkenes hydrocarbon system resin that constitutes the main layer of aforementioned bottle 5 uses density to be 0.935g/cm on the basis of guaranteeing extrusion performance and properties of transparency
3Following vinyl copolymer is better.
Be that this vinyl copolymer is that density is at 0.935g/cm
3Following high-pressure process low density polyethylene (LDPE) (LDPE) or density are at 0.935g/cm
3Following linear low density polyethylene (LLDPE) or by metallocene catalyst linear low density polyethylene (MLLDPE) or as these the poly-vinyl resin of complex.
In addition, also the high propylene series copolymer of flexibility that the alpha-olefin outside propylene and this, ethene are formed can be used to constitute the main layer of aforementioned bottle.
It is 0.912～0.935g/cm that aforementioned high-pressure process low density polyethylene (LDPE) can use density
3, MFR is about 0.2～1.0g/10min, guaranteeing under the situation of rigidity, can use density to be 0.925g/cm
3Above.In addition, aforementioned linear low density polyethylene is that density is 0.910～0.935g/cm
3, MFR is 0.8～2.2g/10min, molecular weight distribution (Mw/Mn) is being desirable more than 3.0, on the basis of guaranteeing properties of transparency and forming characteristics, also above-mentioned high-pressure process low density polyethylene (LDPE) can be coupled to 50 weight %.In addition, also can be on the high-pressure process low density polyethylene (LDPE) some vinyl acetates of combined polymerization, thereby improve drop strength.
In addition, above-mentioned MFR is that the load according to JIS K 6922-2 is 2160g, the value when temperature is 190 ℃.
In addition, also can in aforementioned vinyl copolymer, cooperate molecular weight distribution (Mw/Mn) less than 4 linear low density polyethylene for the drop strength that improves bottle: the linear low density polyethylene (MLLDPE) that ethene-α alkene polymers (LLDPE) or metallocene catalyst get.
This metallocene linear-low density polyethylene sees it is wide good of molecular weight distribution from forming characteristics, and Mw/Mn cooperates 5 to 30 weight % in the high-pressure process low density polyethylene (LDPE) under the situation below 3, from guarantee rigidity cooperate density higher 0.925 to 0.930g/cm
3Better.Perhaps, substitute this metallocene linear-low density polyethylene, cooperate the high slightly linear low density polyethylene (0.920～0.935g/cm of density
3), be favourable from guaranteeing rigidity.But,, low-density effective for the metallocene linear-low density polyethylene with less amount improves drop strength.
In addition, to need bending stiffness (Ao Erxun) be 2500kgf/cm to aforementioned vinyl copolymer
2More than.This bending stiffness is less than 2500kgf/cm
2, then can not guarantee bottle 5 bottleneck portion 2 with and the respective strengths of on every side body part 3, ill situation in the time of may occurring in screwing bottle cap 6.In addition, above-mentioned bending stiffness (Ao Erxun) is the value of measuring according to JIS K7106.
The propylene series copolymer that constitutes the main layer of aforementioned bottle 5 is that ethylene contents is that the following MFR of 18 moles of % is 1.0～4.0g/10min, and fusing point is 130～150 ℃ a propylene-ethylene copolymers, and its tensile elasticity rate is at 7000kgf/cm
2Be desirable.In addition, under this situation,, improve properties of transparency, also can use other vinyl copolymer at ectonexine in order to reduce the outside mist of bottle.
In addition, in constituting the layer of aforementioned bottle 5,, comprised the saponified layer of ethene-vinyl acetate copolymer in order to give the oxygen isolation performance.This ethene-vinyl acetate copolymer as isolated material is saponified to be that ethylene contents is that the ethene-vinyl acetate copolymer of 26～49 moles of % is saponified, main to use saponification degree be more than 98%, is EVOH in the scope of 2.5～6.0g/10min at 21 ℃ MFR.In addition, upgrading with this EVOH is a purpose, also can make it contain nylon, ionic polymer resin, maleic anhydride denatured resin, polyalkenes hydrocarbon system resin etc. as required, from the heat stability aspect, also can known amount contain sodium, from the elements such as boron of boric acid.As the oxygen isolated material beyond the EVOH, use MX nylon, carbowax acid copolymer in addition; Use well-known materials such as ring-type polyalkenes hydrocarbon in addition as the moisture isolated material.
As the adhesives that in constituting the layer of aforementioned bottle 5, uses, can use well by the acid anhydrides of maleic anhydride etc. by the low density polyethylene (LDPE) of sex change, linear low density polyethylene and polypropylene-based copolymer or the resin formed by these compounds.These resins are seen the resin that use is higher slightly than the MFR of main resin and isolated material from the recovery of the different-thickness of each layer and regrowth (burr that will take place when the blow molding and the bottle that produces are pulverized) when adjusting.
The formation of the layer of aforementioned bottle 5, single or multiple lift can, but must be flexibility than higher and have extruding, can be used for blow molding effectively.
Adopt when comprising the multiple-structure of aforementioned EVOH as isolated material, effect is remarkable improving on the drop strength, can utilize a lot of advantage of the present invention.
The representational formation of below representing bottle 5 particularly, but bottle of the present invention is not limited thereto.
By 3 kinds of 5 layers of examples of forming
①LDPE*/Tie/EVOH/Tie/LDPE*
②LDPE*+R/Tie/EVOH/Tie/LDPE*
By 4 kinds of 6 layers of examples of forming
③LDPE*/Tie/EVOH/Tie/LDPE*+R/LDPE*
By 4 kinds of 7 layers of examples of forming
④LDPE*/LDPE*+R/Tie/EVOH/Tie/LDPE*+R/LDPE*
If two-layer isolation layer by 4 kinds of 9 layers of examples of forming
⑤LDPE*/LDPE*+R/Tie/EVOH/Tie/EVOH/Tie/LDPE*+R/LDPE*
At this, LDPE* is polyethylene-based resin layer, high-pressure process low density polyethylene (LDPE), linear low density polyethylene, metallocene linear-low density polyethylene or represents these complexs, as the different resin bed of ectonexine, also there is formation to be decided to be 4 kinds 5 layers, 5 kinds 6 layers, 5 kinds 7 layers situation in addition with above-mentioned layer.
R is the regrowth that expression burr that will take place when blow molding and the bottle that produces when adjusting are pulverized, and directly uses or reproduces the grain back and use, and can be only promptly be up to 100% or be that resin is used by arbitrary proportion with regrowth and LDPE with regrowth.
Tie represents the binding resin layer.
EVOH represents isolation layer.
Use the composite die of forming by materials such as common well-known cast iron, mild steel, aluminium as mould.Common machine up, electro-discharge machining etc. are adopted in the processing of impression part.After impression forms, in order to prevent pore etc., improve the outward appearance of bottle surface usually, can carry out sandblast, blowing, shot-peening etc. and spray processing.At this moment, can be with abrasive grit, the grains of sand of well-known regulation particle diameter, the minuteness particle of glass grain etc. as blasting materials.
Adopt the thickness of the bottle 5 of above-mentioned layer formation, suitably determine behind the handling property of the amount of consideration built-in substance, shape, properties of transparency, extrusion performance, drop strength, filling comformability etc., but the blowing of guaranteeing the bottle wall of body part 3 is 0.2～1.0mm than the thickness of high part, and minimum thickness is 0.2mm.
Embodiment
Next according to the validity of embodiment confirmation as the squeeze bottle of above-mentioned formation.
Embodiment 1
Polyethylene-based resin A shown in the table 1 is used for ectonexine and main layer, using the ethene amount is that the ethene-vinyl acetate copolymer (EVOH) of 32 moles of % is as isolated material, using maleic anhydride grafting ratio to be about 0.7% LLDPE is that adhesives (AD) is as adhesives, layer constitute the main layer/internal layer of skin/main layer/AD/EVOH/AD/ (layer percentage by weight: 10/10/3/4/3/55/15) 4 kinds 7 layers, the residual resin of burr etc. is about 30 weight % after pulverizing ratio is used for main layer, on the body part of bottle, the impression that is spill on the outer surface is set, rotating the interior dress of blowing liquid with 60/minute speed is 1100ml, and bottle heavily is respectively 27g, 24g, the multi-layer thin wall vase of 21g.
In addition, the line that is the impression of spill on the outer surface uses two kinds of moulds of degree of depth 0.20mm * width 0.80mm and degree of depth 0.40mm * width 0.80mm, uses determined inject process.
For the multi-layer thin wall vase of such making, use following method to carry out the evaluation of the visual identification performance of (1) impression, (2) drop strength, (3) screw capping torque.
(1) the visual identification performance of impression
Filling mayonnaise in the multi-layer thin wall vase is estimated impression with following benchmark under the fluorescent lamp of 20W.
◎: apart from 100cm visual identification easily.
Zero: in hand held and apart from 30cm visual identification easily.
△: can visual identification under certain light angle.
*: also be difficult to visual identification even change various light angles.
(2) drop strength
12 multi-layer thin wall vases for same test level, 90% of filling 1000ml is the interior dress liquid of water, after placing 24 hours under 5 ℃ the temperature, with the height of fall of 1.5m the multi-layer thin wall vase is respectively fallen 5 times with the posture of vertical and level, write down damaged number of times.
(3) screw capping torque
5 multi-layer thin wall vases (but the line that is the impression of spill on the outer surface only is a kind of degree of depth 0.4mm * width 0.8mm) for same test level, 90% of filling 1000ml is the interior dress liquid of water, measure on one side with the torque indicator of selling on the market on one side and cover bottle cap, the screw capping torque is with 10kgf/cm
2Be the upper limit, 5 center line average values is obtained in the torque when being determined at multi-layer thin wall vase generation large deformation under it.In addition, determine that the screw capping torque is generally at 10kgf/cm
2More than better.
Embodiment 2
Polyethylene-based resin B shown in the table 1 is used for ectonexine and main layer, except not making bottle heavily for the multi-layer thin wall vase of 27g, making bottle similarly to Example 1 heavily is the multi-layer thin wall vase of 24g, 21g, and the multi-layer thin wall vase to making, and estimates in the same manner with embodiment 1.
Polyethylene-based resin C shown in the table 1 is used for ectonexine and main layer, except not making bottle heavily for the multi-layer thin wall vase of 27g, making bottle similarly to Example 1 heavily is the multi-layer thin wall vase of 24g, 21g, and the multi-layer thin wall vase to making, and estimates in the same manner with embodiment 1.
Embodiment 4
Polyethylene-based resin D shown in the table 1 is used for ectonexine and main layer, except not making bottle heavily for the multi-layer thin wall vase of 27g, making bottle similarly to Example 1 heavily is the multi-layer thin wall vase of 24g, 21g, and the multi-layer thin wall vase to making, and estimates in the same manner with embodiment 1.
In table 1, be illustrated in the resin kind of using in above-mentioned ectonexine and the main layer, and will from embodiment 1 to 4, the result of gained in table 2 and 3, represent.
Table 1
| Symbol | The resin kind | Resin properties | Bending stiffness (Ao Erxun) |
| ???A | ??????LDPE | Density 0.918g/cm 3·MFR0.6g/10min | ??2500kgf/cm 2 |
| ???B | ??????LDPE | Density 0.925g/cm 3·MFR0.4g/10min | ??3100kgf/cm 2 |
| ???C | LLDPE+LDPE (70/30 weight %) | LLDPE: density 0.920g/cm 3MFR 1.4g/10minMw/Mn is 3.5 LDPE: density 0.920g/cm 3·MFR ???0.4g/10min | ??3300kgf/cm 2 |
| ???D | LDPE+MLLDPE (80/20 weight %) | LDPE: density 0.927g/cm 3MFR 0.4g/10min MLLDPE: density 0.912g/cm 3MFR 2.0g/10minMw/Mn is 2.5 | ??3500kgf/cm 2 |
Table 2
| The resin kind | The heavy g of bottle | The recessed dark 0.20mm of impression | The recessed dark 0.40mm of impression | |||
| The visual identification performance | Break after falling | The visual identification performance | Break after falling | |||
| Embodiment 1 | ????A | ??27 ??24 ??21 | ○ ○ ○ | ??0/12 ??0/12 ??0/12 | ◎ ◎ ◎ | ??0/12 ??0/12 ??0/12 |
| Embodiment 2 | ????B | ??24 ??21 | ○ ○ | ??0/12 ??0/12 | ◎ ◎ | ??0/12 ??0/12 |
| | ????C | ??24 ??21 | ◎ ◎ | ??0/12 ??0/12 | ◎ ◎ | ??0/12 ??0/12 |
| Embodiment 4 | ????D | ??24 ??21 | ◎ ◎ | ??0/12 ??0/12 | ◎ ◎ | ??0/12 ??0/12 |
Table 3
| The resin kind | The heavy g of bottle | The recessed dark 0.40mm of impression | |
| Embodiment 1 | ????A | ??27 ??24 ??21 | ????10＜ ?????8.5 ?????8.0 |
| Embodiment 2 | ????B | ??24 ??21 | ????10＜ ????10＜ |
| | ????C | ??24 ??21 | ????10＜ ?????9.6 |
| Embodiment 4 | ????D | ??24 ??21 | ????10＜ ????10＜ |
Comparative example 1
On the body part of multi-layer thin wall vase, the impression that is protuberance on the outer surface is set, except the line of the impression that increases protuberance is that (definition of the degree of depth is the H by Fig. 5 to degree of depth 0.05mm, below identical) * width 0.80mm and degree of depth 0.10mm * width 0.80mm two kinds outside, making bottle similarly to Example 1 heavily is the multi-layer thin wall vase of 24g, 21g, for the multi-layer thin wall vase that makes, remove outside the mensuration of not doing the screw capping torque, estimate in the same manner with embodiment 1.
Comparative example 2
Polyethylene-based resin B shown in the table 1 is used for ectonexine and main layer, except not making bottle heavily for the multi-layer thin wall vase of 27g, making bottle similarly to Example 1 heavily is the multi-layer thin wall vase of 24g, 21g, and the multi-layer thin wall vase to making, and estimates in the same manner with comparative example 1.
Comparative example 3
Polyethylene-based resin C shown in the table 1 is used for ectonexine and main layer, except not making bottle heavily for the multi-layer thin wall vase of 27g, making bottle similarly to Example 1 heavily is the multi-layer thin wall vase of 24g, 21g, and the multi-layer thin wall vase to making, and estimates in the same manner with comparative example 1.
Comparative example 4
Polyethylene-based resin D shown in the table 1 is used for ectonexine and main layer, except not making bottle heavily for the multi-layer thin wall vase of 27g, making bottle similarly to Example 1 heavily is the multi-layer thin wall vase of 24g, 21g, and the multi-layer thin wall vase to making, and estimates in the same manner with comparative example 1.
To from comparative example 1 to 4, the result of gained in table 4, represent.
Table 4
| The resin kind | The heavy g of bottle | The protruding 0.05mm of impression | The protruding 0.10mm of impression | The protruding 0.20mm of impression | The protruding 0.40mm of impression | |||||
| The visual identification performance | Break after falling | The visual identification performance | Break after falling | The visual identification performance | Break after falling | The visual identification performance | Break after falling | |||
| Comparative example 1 | ??A | ?27 ?24 ?21 | × × × | ??0/12 ??0/12 ??0/12 | △ △ △ | ??1/12 ??2/12 ??4/12 | ◎ ○ ○ | ??3/12 ??5/12 ??7/12 | ◎ ◎ ◎ | ??6/12 ??8/12 ??10/12 |
| Comparative example 2 | ??B | ?24 ?21 | × × | ??1/12 ??0/12 | △ △ | ??3/12 ??6/12 | ○ ○ | ??7/12 ??9/12 | ◎ ◎ | ??11/12 ??12/12 |
| Comparative example 3 | ??C | ?24 ?21 | × × | ??0/12 ??0/12 | △ × | ??1/12 ??1/12 | ○ ○ | ??2/12 ??2/12 | ◎ ◎ | ??3/12 ??6/12 |
| Comparative example 4 | ??D | ?24 ?21 | × × | ??0/12 ??0/12 | △ × | ??0/12 ??1/12 | ○ ○ | ??1/12 ??1/12 | ◎ ◎ | ??1/12 ??3/12 |
From the multi-layer thin wall vase of embodiment 1 to 4 and comparative example 1 to 4, all be on the basis of guaranteeing bottleneck portion thickness, body is done thin-pass cross the resin discharge-amount of adjusting main layer, it is heavy to reduce bottle, and each all is a good forming ability.
According to table 2,, can not influence the degree of depth of impression and improve drop strength although all alleviated weight from embodiment 1 to 4 as can be known.In addition, on the visual identification performance, owing to become recessedly from protruding, reflected light rays is at random and reduce, but properties of transparency is good, so because wall is thin by deepening the degree of depth of some impressions, can guarantee and conventional example visual identification performance much at one.In addition, under the situation of the LLDPE of embodiment 3 and 4 and LDPE+ metallocene LLDPE, because luster performance has well improved the visual identification performance on the contrary.
According to table 3, as can be known owing to improved drop strength significantly from embodiment 1 to 4, so can select the high material of rigidity, the lower density LDPE of embodiment 2, the LLDPE that can select embodiment 3 and embodiment 4 and LDPE+ metallocene LLDPE, in the processing that increases the multi-layer thin wall vase, also increased the screw capping torque, and can will cover on the no bottleneck of multi-layer thin wall vase of interior dress liquid that has been screwed to filling difficultly.
According to table 4, though how many materials of comparative example 1 to 4 has difference, as the visual identification performance of protruding impression is not reduced to and can not discerns, and then drop strength can not improve, and can not find the condition of taking into account visual identification performance and drop strength.So do not carry out the mensuration of screw capping torque.
Embodiments of the present invention more than have been described, but concrete formation is not limited to this, and is interpreted as in the scope that does not break away from core concept of the present invention, can suitably changing and make up.
As described in detail above, according to the present invention, when keeping visual identification performance and isolation performance, the attenuate wall thickness, save resource, reduce on this big problem of quantity of refuse, having drop strength also remains on equal or on it with the bottle of present wall thickness, the range of choice of material broadens, can select the high material of rigidity, just much less, lid bottle cap performance is also very good when carrying when bottle is produced and built-in substance filling, and the processing when having adorned the final form of bottle of built-in substance is also very good.
Claims (8)
1. a squeeze bottle is characterized in that, at least a portion of the impression that forms on the outside face of bottle is substantially recessed.
2. squeeze bottle according to claim 1 is characterized in that the degree of depth of described impression is more than 0.15mm.
3. squeeze bottle according to claim 1 and 2 is characterized in that, uses density at 0.935g/cm on the main layer of the described bottle of formation
3Following vinyl copolymer.
4. squeeze bottle according to claim 3 is characterized in that, described vinyl copolymer is that density is at 0.935g/cm
3Following low density polyethylene (LDPE) (LDPE) or density are at 0.935g/cm
3Following linear low density polyethylene (LLDPE) or these complex.
5. according to claim 3 or 4 described squeeze bottles, it is characterized in that, in the described vinyl copolymer of the main material that constitutes described bottle, cooperate molecular weight distribution (Mw/Mn) less than 4 linear low density polyethylene (LLDPE) or metallocene linear-low density polyethylene (MLLDPE).
6. according to each described squeeze bottle in the claim 3～5, it is characterized in that the bending stiffness of described vinyl copolymer (Ao Erxun) is at 2500kgf/cm
2More than.
7. squeeze bottle according to claim 1 and 2 is characterized in that, uses on the main layer of described bottle by propylene and the alpha-olefin outside this, the propylene series copolymer that ethene is formed constituting.
8. according to each described squeeze bottle in the claim 3～7, it is characterized in that constituting on the main layer of described bottle, it is saponified to contain ethene-vinyl acetate copolymer.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2002225426A JP2004067110A (en) | 2002-08-01 | 2002-08-01 | Squeeze bottle |
| JP2002225426 | 2002-08-01 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1475410A true CN1475410A (en) | 2004-02-18 |
Family
ID=31492152
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA031466834A Pending CN1475410A (en) | 2002-08-01 | 2003-07-11 | Extruding bottle |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JP2004067110A (en) |
| KR (1) | KR20040012468A (en) |
| CN (1) | CN1475410A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102159465B (en) * | 2008-09-22 | 2013-06-05 | 东洋制罐株式会社 | Synthetic resin container |
| JP2017019562A (en) * | 2015-07-10 | 2017-01-26 | キユーピー株式会社 | Liquid seasoning container and container-packed liquid seasoning |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5683903B2 (en) * | 2010-11-01 | 2015-03-11 | 株式会社プライムポリマー | Tube container |
| JP5958709B2 (en) * | 2013-01-17 | 2016-08-02 | キョーラク株式会社 | Blow molding mold and blow molding container |
| EP3366598B1 (en) * | 2013-11-27 | 2021-01-20 | Kyoraku Co., Ltd. | Delaminatable container |
| JP7173886B2 (en) * | 2019-01-30 | 2022-11-16 | 株式会社吉野工業所 | thin-walled container |
-
2002
- 2002-08-01 JP JP2002225426A patent/JP2004067110A/en active Pending
-
2003
- 2003-06-25 KR KR1020030041325A patent/KR20040012468A/en not_active Withdrawn
- 2003-07-11 CN CNA031466834A patent/CN1475410A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102159465B (en) * | 2008-09-22 | 2013-06-05 | 东洋制罐株式会社 | Synthetic resin container |
| JP2017019562A (en) * | 2015-07-10 | 2017-01-26 | キユーピー株式会社 | Liquid seasoning container and container-packed liquid seasoning |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2004067110A (en) | 2004-03-04 |
| KR20040012468A (en) | 2004-02-11 |
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